Updated On: 04 May, 2023 08:47 AM IST | New Delhi | IANS
Asthma is a chronic respiratory disease that affects 339 million people globally. It causes airways in the lungs to become inflamed and narrow, and produce excess mucus, leading to breathing difficulties, chest tightness, wheezing, and coughing

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More than 80 per cent asthma cases in India are undiagnosed, which if left untreated can worsen over time, said experts here on Tuesday.
World Asthma Day is an annual event observed on the first Tuesday of May, aimed at raising awareness about asthma, a chronic respiratory disease affecting millions worldwide.